Reflective Display Front-Light Guiding Module
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Solution Overview
Problem
Reflective displays struggle to provide adequate illumination in low ambient light conditions, leading to reduced reading experience and increased eye strain due to reliance on external light sources, which can be insufficient, especially at night or in dark environments.
Innovation Solution
A lateral array structure for reflective displays incorporating a thin-diaphragm transistor backplate, a front-light guiding module with reflective diaphragms arranged at specific angles, and a front-light unit, which enhances self-illumination by reflecting light towards the display, improving brightness and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a reflective display is used without a backlight, then power consumption is reduced and eye strain is minimized, but illumination intensity is insufficient in low ambient light conditions
Solution Approach 1:
The display structure uses the display panel itself as a reflective surface to redirect ambient light back through the color filter layer and toward the user's eyes, enabling the display to serve its dual function of both showing content and providing illumination without requiring a separate backlight unit
Solution Approach 2:
The patent introduces a reflective layer positioned between the color filter layer and the touch sensor, creating an additional optical dimension that redirects light paths vertically to enhance illumination intensity while maintaining the low-power reflective display architecture
2Illumination intensity
If a front-light unit is added to the reflective display, then illumination intensity is improved in low light conditions, but device complexity increases
Solution Approach 1:
The display panel is designed to perform multiple functions simultaneously: it serves as both the visual display surface and the primary light reflection/illumination element, eliminating the need for separate dedicated illumination components and reducing overall device complexity
3Productivity
If reflective diaphragms are added to redirect light, then illumination efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies that the reflective diaphragms should be arranged at angles between 0 and 90 degrees relative to the display panel surface, providing a range of acceptable angles that balances illumination efficiency with manufacturing tolerances, rather than requiring precise single-angle alignment
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly enhances the reflective display's illumination efficiency, providing a better reading experience even in low light conditions while reducing power consumption and eye strain by utilizing the reflective diaphragms to redirect light effectively.
Implementation Method 1
the thin-diaphragm transistor backplate is arranged to reflect light
Implementation Method 2
the front-light guiding module comprises a plurality of reflective diaphragms arranged in order along the irradiating direction of the front-light unit
Data Source
AI summary
A reflective display includes a display, a thin-diaphragm transistor backplate, a front-light guiding module, and a front-light unit. The thin-diaphragm transistor backplate is arranged to reflect light, the front-light guiding module is located between the display and the thin-diaphragm transistor backplate, and the front-light unit is provided on the side of the front-light guiding module to irradiate the front-light guiding module. The front-light guiding module includes reflective diaphragms arranged in order along the irradiation direction of the front-light unit. The angle between a reflective diaphragm and the display is between 0 and 90 degrees. By using an array of reflective coating structures for the front-light guiding module, the present invention can better reflect the light from the front-light source to the thin-diaphragm transistor backplate, thereby increasing self-illumination of the reflective display. Therefore, the present application can significantly improve existing reflective displays without significantly increasing costs.